*{
  margin:0;
  padding:0;
}
/* html,body{
  height:100%;
} */
body{
  background: url(../images/bg.png);
  background-size: cover;
}
.mainBox{
  padding:30px;
  box-sizing: border-box;
  height:100%;
  display:flex;
  flex-direction: column;
  align-items: center;
  
}
.mainBox img{
  border-radius: 20px;
  margin-bottom:20px;
}
.topBg{
  width:100%;
  height:400px;
  background: url(../images/main.png) center center no-repeat;
  background-size: contain;
}
.bottomBtn{
  padding-top:20px;
  box-sizing: border-box;
  width:100%;
  height:150px;
  text-align: center;
  position: fixed;
  bottom:20px;
}

.bottomBtn input,button{
  height:50px;
  line-height: 50px;
  width:80%;
  border-radius: 30px;
  outline: none;
  border: none;
} 
.bottomBtn input{
  font-size: 18px;
  padding-left:20px;
  border:1px solid #ccc;
  box-sizing: border-box;
} 
.bottomBtn button{
  background-image: linear-gradient(to bottom, #fe9c52 , #f77671);
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  margin-top:20px;
}
.openIt{
  display:none;
  position: fixed;
  width:100%;
  height:100%;
  top:0;
  background-color: rgba(0,0,0,.7);
}
.openIt .inBox{
  color: #fff;
  font-size: 18px;
  text-align: center;
  position: absolute;
  top: 30%;
  line-height: 30px;
  width: 100%;
}
.arrow{
  background: url(../images/openIt.png)center center no-repeat;
  background-size: contain;
  position: absolute;
  top: 0;
  right: 20px;
  width: 30%;
  height: 30%;
}
.openApp,.downloadApp{
  display:none;
  position: fixed;
  width:100%;
  height:100%;
  top:0;
  background-color: rgba(0,0,0,.7);
}
.openApp .imgBox{
  height:55%;
  background: url(../images/oldUser.png) center center no-repeat;
  background-size: contain;
  position: relative;
}
.btnS{
  position: absolute;
  bottom:60px;
  width:80%;
  left:50%;
  transform: translate(-50%,0);
  background: url(../images/btnBg.png) no-repeat 50%;
  color: #c8372f;
  font-size: 20px;
  height:50px;
  line-height: 50px;
  outline: none;
  text-align: center;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}
.downloadApp .imgBox{
  height:55%;
  background: url(../images/newUser.png) center center no-repeat;
  background-size: contain;
  position: relative;
}